package com.atguigu.daijia.map.service.impl;

import com.alibaba.nacos.client.naming.utils.CollectionUtils;
import com.atguigu.daijia.common.constant.RedisConstant;
import com.atguigu.daijia.common.constant.SystemConstant;
import com.atguigu.daijia.common.result.Result;
import com.atguigu.daijia.common.util.LocationUtil;
import com.atguigu.daijia.driver.client.DriverInfoFeignClient;
import com.atguigu.daijia.map.repository.OrderServiceLocationRepository;
import com.atguigu.daijia.map.service.LocationService;
import com.atguigu.daijia.model.entity.driver.DriverSet;
import com.atguigu.daijia.model.entity.map.OrderServiceLocation;
import com.atguigu.daijia.model.form.map.OrderServiceLocationForm;
import com.atguigu.daijia.model.form.map.SearchNearByDriverForm;
import com.atguigu.daijia.model.form.map.UpdateDriverLocationForm;
import com.atguigu.daijia.model.form.map.UpdateOrderLocationForm;
import com.atguigu.daijia.model.vo.map.NearByDriverVo;
import com.atguigu.daijia.model.vo.map.OrderLocationVo;
import com.atguigu.daijia.model.vo.map.OrderServiceLastLocationVo;
import lombok.extern.slf4j.Slf4j;
import org.apache.catalina.User;
import org.bson.types.ObjectId;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Example;
import org.springframework.data.domain.Sort;
import org.springframework.data.geo.*;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.redis.connection.RedisGeoCommands;
import org.springframework.data.redis.core.GeoOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

@Slf4j
@Service
@SuppressWarnings({"unchecked", "rawtypes"})
public class LocationServiceImpl implements LocationService {

    @Autowired
    private RedisTemplate redisTemplate;

    @Autowired
    private DriverInfoFeignClient driverInfoFeignClient;

    @Autowired
    private OrderServiceLocationRepository orderServiceLocationRepository;

    @Autowired
    private MongoTemplate mongoTemplate;



    //添加司机位置
    @Override
    public Boolean updateDriverLocation(UpdateDriverLocationForm updateDriverLocationForm) {
        GeoOperations geoOperations = redisTemplate.opsForGeo();

        //创建坐标
        Point point = new Point(updateDriverLocationForm.getLongitude().doubleValue(),
                updateDriverLocationForm.getLatitude().doubleValue());
        // 添加到redis里面
        geoOperations.add(
                RedisConstant.DRIVER_GEO_LOCATION,
                point,
                updateDriverLocationForm.getDriverId().toString());

        return true;
    }

    //删除司机位置
    @Override
    public Boolean removeDriverLocation(Long driverId) {
        redisTemplate.opsForGeo().remove(RedisConstant.DRIVER_GEO_LOCATION, driverId.toString());
        return true;
    }

    @Override
    public List<NearByDriverVo> searchNearByDriver(SearchNearByDriverForm searchNearByDriverForm) {
        //搜索经纬度位置5公里以内的司机
        //1 操作redis里面geo
        //创建point，经纬度位置
        Point point = new Point(searchNearByDriverForm.getLongitude().doubleValue(),
                searchNearByDriverForm.getLatitude().doubleValue());

        //定义距离，5公里
        // public static final double  NEARBY_DRIVER_RADIUS = 5;
        // KILOMETERS(6378.137, "km"),
        Distance distance = new Distance(SystemConstant.NEARBY_DRIVER_RADIUS,
                RedisGeoCommands.DistanceUnit.KILOMETERS);

        //创建circle对象，point  distance
        Circle circle = new Circle(point, distance);

        //定义GEO参数，设置返回结果包含内容
        RedisGeoCommands.GeoRadiusCommandArgs args =
                RedisGeoCommands.GeoRadiusCommandArgs.newGeoRadiusArgs()
                        .includeDistance()  //包含距离
                        .includeCoordinates() //包含坐标
                        .sortAscending(); //升序

        // public static final String DRIVER_GEO_LOCATION = "driver:geo:location";
        GeoResults<RedisGeoCommands.GeoLocation<String>> result =
                redisTemplate.opsForGeo().radius(RedisConstant.DRIVER_GEO_LOCATION, circle, args);

        //2 查询redis最终返回list集合
        List<GeoResult<RedisGeoCommands.GeoLocation<String>>> content = result.getContent();

        //3 对查询list集合进行处理
        // 遍历list集合，得到每个司机信息
        // 根据每个司机个性化设置信息判断
        List<NearByDriverVo> list = new ArrayList<>();
        if (!CollectionUtils.isEmpty(content)) {
            Iterator<GeoResult<RedisGeoCommands.GeoLocation<String>>> iterator = content.iterator();
            while (iterator.hasNext()) {
                GeoResult<RedisGeoCommands.GeoLocation<String>> item = iterator.next();

                //获取司机id
                Long driverId = Long.parseLong(item.getContent().getName());

                //远程调用，根据司机id个性化设置信息
                Result<DriverSet> driverSetResult = driverInfoFeignClient.getDriverSet(driverId);
                DriverSet driverSet = driverSetResult.getData();

                //判断订单里程order_distance
                BigDecimal orderDistance = driverSet.getOrderDistance();
                //orderDistance==0，司机没有限制的
                //如果不等于0 ，比如30，接单30公里代驾订单。
                //接单距离 - 当前单子距离  < 0,不复合条件
                // 30          35
                if (orderDistance.doubleValue() != 0
                    && orderDistance.subtract(searchNearByDriverForm.getMileageDistance()).doubleValue()<0) {
                    continue;
                }

                //判断接单里程 accept_distance
                //当前接单距离
                BigDecimal currentDistance =
                        new BigDecimal(item.getDistance().getValue()).setScale(2, RoundingMode.HALF_UP);

                BigDecimal acceptDistance = driverSet.getAcceptDistance();
                if (acceptDistance.doubleValue() != 0
                        && acceptDistance.subtract(currentDistance).doubleValue() < 0) {
                    continue;
                }

                //封装复合条件数据
                NearByDriverVo nearByDriverVo = new NearByDriverVo();
                nearByDriverVo.setDriverId(driverId);
                nearByDriverVo.setDistance(currentDistance);
                list.add(nearByDriverVo);

            }

        }
        return list;
    }

    @Override
    public Boolean updateOrderLocationToCache(UpdateOrderLocationForm updateOrderLocationForm) {
        ValueOperations valueOperations = redisTemplate.opsForValue();
        //封装司机的位置信息
        OrderLocationVo orderLocationVo = new OrderLocationVo();
        orderLocationVo.setLatitude(updateOrderLocationForm.getLatitude());
        orderLocationVo.setLongitude(updateOrderLocationForm.getLongitude());
        //加入数据库中
        valueOperations.set(
                RedisConstant.UPDATE_ORDER_LOCATION + updateOrderLocationForm.getOrderId(),
                orderLocationVo);
        return true;
    }

    @Override
    public OrderLocationVo getCacheOrderLocation(Long orderId) {
        String key = RedisConstant.UPDATE_ORDER_LOCATION + orderId;
        OrderLocationVo orderLocationVo = (OrderLocationVo)redisTemplate.opsForValue().get(key);
        return orderLocationVo;
    }

    @Override
    public Boolean saveOrderServiceLocation
            (List<OrderServiceLocationForm> orderLocationServiceFormList) {
        //批量保存信息到MongoDB
        //orderServiceLocationForm --> OrderServiceLocation
        List<OrderServiceLocation> list = new ArrayList<>();

        orderLocationServiceFormList.forEach(orderServiceLocationForm -> {

            //转换对象
            OrderServiceLocation orderServiceLocation = new OrderServiceLocation();
            BeanUtils.copyProperties(orderServiceLocationForm,orderServiceLocation);
            orderServiceLocation.setId(ObjectId.get().toString());
            orderServiceLocation.setCreateTime(new Date());

            //将每一个对象放到集合中
            list.add(orderServiceLocation);
        });

        //保存集合到MongoDB中
        orderServiceLocationRepository.saveAll(list);

        return true;
    }

    @Override
    public OrderServiceLastLocationVo getOrderServiceLastLocation(Long orderId) {
        //查询MongoDB
        //查询条件 ：orderId
        Criteria criteria =
                Criteria.where("orderId").is("orderId");
        Query query = new Query(criteria);
        //根据创建时间降序排列
        query.with(Sort.by(Sort.Order.desc("createTime")));
        //最新一条数据
        query.limit(1);

        OrderServiceLocation orderServiceLocation =
                mongoTemplate.findOne(query, OrderServiceLocation.class);
        OrderServiceLastLocationVo orderServiceLastLocationVo = new OrderServiceLastLocationVo();
        BeanUtils.copyProperties(orderServiceLocation,orderServiceLastLocationVo);
        return orderServiceLastLocationVo;

    }

    @Override
    public BigDecimal calculateOrderRealDistance(Long orderId) {
        //1 根据订单id获取代驾订单位置信息，根据创建时间排序（升序）
        //查询MongoDB
        OrderServiceLocation orderServiceLocation = new OrderServiceLocation();
        orderServiceLocation.setOrderId(orderId);
        Example<OrderServiceLocation> example = Example.of(orderServiceLocation);

        Sort sort = Sort.by(Sort.Direction.ASC, "createTime");
        List<OrderServiceLocation> list = orderServiceLocationRepository.findAll(example, sort);


        //2 第一步查询返回订单位置信息list集合
        //把list集合遍历，得到每个位置信息，计算两个位置距离
        //把计算所有距离相加操作
        double sum = 0;
        for(int i = 0; i < list.size(); i++){
            OrderServiceLocation orderServiceLocation1 = list.get(i);
            OrderServiceLocation orderServiceLocation2 = list.get(2);

            //根据经纬度计算实际的距离
            double distance = LocationUtil.getDistance(orderServiceLocation1.getLatitude().doubleValue(),
                    orderServiceLocation1.getLongitude().doubleValue(),
                    orderServiceLocation2.getLatitude().doubleValue(),
                    orderServiceLocation2.getLongitude().doubleValue());

            sum += distance;
        }

        //测试过程中，没有真正代驾，实际代驾GPS位置没有变化，模拟：实际代驾里程 = 预期里程 + 5
        if(sum == 0) {
            return new BigDecimal(5);
        }

        //3 返回最终计算实际距离
        return new BigDecimal(sum);
    }
}
